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DLE 20cc Gasser! (Data & Links 1st Post)

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DLE 20cc Gasser! (Data & Links 1st Post)

Old 01-03-2011, 10:16 AM
  #2501  
jtflys
 
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Graig,
#F00523
JT
Old 01-03-2011, 03:08 PM
  #2502  
foxworth
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

While I was running mine I noticed a lot of air bubbles going into the carb. It seemed to take more time than normal to pump the fuel out of the tank,like it was pulling in air some where. I pulled the tank, the supply side did not have a good seal. I built up a spot on tube with solder and clamped the flexible tube on each side of the spot.( inside the tank also) I just ran it again and it seems to be fine. The holidays and weather have put a crimp in the flying.
Our weather has been on the cool side for us,I will give it more time to warm up. Here two or three days below 50 is a real cold wave.
Old 01-03-2011, 04:37 PM
  #2503  
Craig 01
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

jtflys thanks,

It is an early serial and as was mentioned previously, hopefully a one off.
Going by this forum thats two mechanical failures reported "that i know of",although interestingly,both at the bigend area.
Although,not bad for a new model/design going by the number reported here in service performing well without issue.

Cheers
Old 01-03-2011, 05:58 PM
  #2504  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: ghoffman

I let it "warm up" for like 5 minutes. I can run it at any throttle position for as long as you want, and it still is too cool in this weather. The crankcase barely gets even warm.
Take a sock( like the kind you wear on your foot) and cut the top part off that is kinda the stretchy part & place it around the cylinder in very cold weather. It will be better for the engine to run warmer ...just make sure it does not get too hot. Running a engine too cool is not good at all. Capt,n
Old 01-03-2011, 06:23 PM
  #2505  
Woody218
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I have wrapped aluminium foil around the engine's cylinder when it's really cold outside. Running an engine too cool is almost as bad as overheating.
Old 01-03-2011, 06:32 PM
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ghoffman
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Thanks! I will try the sock version first.
Old 01-03-2011, 06:38 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

CaptinJohn - I like the sock idea. Would you recommend that for a 50cc gasser, too? Or just these smaller engines? And at what temp would you recommend we start using the sock? Thanks.
Old 01-03-2011, 08:18 PM
  #2508  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I have a snowblower 2 cycle engine. It works in all kindof frigid weather. It is 25 years old andstill going st rong. I have an RCGf 15 that I put a hundred flights last year off the snow.
It was flown in 12 and15 degree weather. Still runs like new.
Old 01-03-2011, 08:40 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Nice to hear about your good running engines........but do you warm them up in the cold weather or jut go fly. That info would be more helpful.
Old 01-03-2011, 08:49 PM
  #2510  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

No longer than if it were 70 out.
Old 01-03-2011, 10:42 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: ghoffman

Well, my -20 flamed out on me in flight today, first time in about 42 flights. It was running really well up until then, was even easy to start and had great throttle response, but I think I iced up the carb. Someone at the club that has 40+ years flying experience flying (RC and full scale from 152's to F-4 and 767) said it was perfect conditions for it. It was like 40F and was very foggy earlier, but with the melting snow it was still like a mist over the field. Oh well, I aimed for a snow bank and put it down fast. Any further and it would have been in the woods/river, but I did not have enough altitude to do anything else. No biggle, just 2 new nylon l/g screws and a new Vess 17-6 was the only damage.
Hi,

Just noticed that you use nylon screws for the L/G - any particular reason why you use nylon instead of steel ?

Regards

Sandy Jain
Old 01-04-2011, 01:10 AM
  #2512  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Hi, need some help.
I have world model 70 inch P47 and CRRC GF26i V2 on it and hawk wooden prop 17 x 10 and it seems like not enough power with this engine. I plan to replace the engine with DLE 20. Is it much power with this engine for this kind of plane.
Thanks, any comments appreciate
Old 01-04-2011, 04:12 AM
  #2513  
ghoffman
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

They act like a fuse in case I have a dead stick like on Sunday. That way nothing except the screws need to replaced.
Old 01-04-2011, 04:28 AM
  #2514  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: anwarcs

Hi, need some help.
I have world model 70 inch P47 and CRRC GF26i V2 on it and hawk wooden prop 17 x 10 and it seems like not enough power with this engine. I plan to replace the engine with DLE 20. Is it much power with this engine for this kind of plane.
Thanks, any comments appreciate
Just my opinion, OK? I'm not real sure if the engine swap will give you much more power. It'll be a few ounces lighter, but turning that into extra performance to make the swap worth it may be challenging. Prior to going that route, I might be tempted to try a couple different props to see if some gains may be had going that way. Maybe a 16x10 or a 17x8?
Old 01-04-2011, 04:30 AM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: anwarcs

Hi, need some help.
I have world model 70 inch P47 and CRRC GF26i V2 on it and hawk wooden prop 17 x 10 and it seems like not enough power with this engine. I plan to replace the engine with DLE 20. Is it much power with this engine for this kind of plane.
Thanks, any comments appreciate
Specs on that plane:
Specifications
Wing Span : 70 in / 1780 mm
Wing Area : 893 sq in / 57.6 sq dm
Flying Weight : 10.7 lbs / 4850 g
Fuselage Length : 62 in / 1580 mm
Engine Required : 4-stroke 1.20 engine

At 10+ pounds will the DLE-20 be enough engine for this plane?

Old 01-04-2011, 04:41 AM
  #2516  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I can tell you that the 17-10 is too much prop for the CRRC 26. You will get better performance with a 17-7 or a 18-6 Zoar or equal type of prop.
Old 01-04-2011, 07:05 AM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: anwarcs

Hi, need some help.
I have world model 70 inch P47 and CRRC GF26i V2 on it and hawk wooden prop 17 x 10 and it seems like not enough power with this engine. I plan to replace the engine with DLE 20. Is it much power with this engine for this kind of plane.
Thanks, any comments appreciate
Go back to this threads first msg [Post #1], and under the [Interesting Comments] area you'll see it stating more power than a CRRC 26.
Loads of other hot-links to info on this engine in that post as well!

So, yes, you'd be better of with this DLE20cc.
Old 01-04-2011, 07:47 AM
  #2518  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I have a 70" Revolver with the DLE20, about 10 lbs - very similar to your P47 - and use an APC 16x8 - excellent performance. But if you're going for speed it seems a 15x10 or 15x12 works better than a 16x8. And there's a good video on Youtube from a guy "knockoffs" with the same setup, but using a Xoar 15x8 - very nice performance. It's called "DLE20cc and Revolver 70".
Old 01-04-2011, 10:03 AM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: ghoffman

They act like a fuse in case I have a dead stick like on Sunday. That way nothing except the screws need to replaced.
Thought as much, just wanted to confirm with you. Are the nylon screws enough for rougher than normal landings ? Our field is not very even - rather rough and bumpy.

Thanx for your tip anyway...

Regards

Sandy jain
Old 01-04-2011, 12:22 PM
  #2520  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

I've done the same on several different models.
Use 1/4-20 nylon screws, 3 works best.
Old 01-04-2011, 12:29 PM
  #2521  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

Is there a limit on the size model thatitis safe to use nylon screws? Ilike this suggestion but would prefer to have as much Info as possible before running home to change all my landing gear screws.

I have personally had the ubdercarriage of a 60 size stick rip out because the model hit a hose on landing before safely coming to rest.
Old 01-04-2011, 01:01 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

No hard rule about it, just use common sense.
I wouldn't use such on bigger 1/4 scale, or any 2-piece L-G.
Old 01-04-2011, 01:40 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

If you are going the nylon screw route for the landing gear, then I advise that you forget about using any wheelpants at all, because if (when) the gear lets go, then the pants usually go right through the underside of the wings and with my luck and experience, the top also.
Old 01-04-2011, 03:16 PM
  #2524  
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

You get alot more airflow off an airplane engine vs a weedeater, chainsaw.
many full scale planes have movable lovers that either restrict airflow or open it up.
Look at the p-40
Old 01-04-2011, 04:12 PM
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Default RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


ORIGINAL: anwarcs

Hi, need some help.
I have world model 70 inch P47 and CRRC GF26i V2 on it and hawk wooden prop 17 x 10 and it seems like not enough power with this engine. I plan to replace the engine with DLE 20. Is it much power with this engine for this kind of plane.
Thanks, any comments appreciate
I have a 4 Star 120 with the CRRC 26 running a Xoar 17 x 8. If I remember correctly, it weighs about 12 lbs. I've tried a few different props, and keep coming back to the 17 x 8, at least for this plane/engine combo. Not unlimited vertical, but has nice speed and nice pull over the top.

Hope this helps.


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